April weather forecast
Charleston International Airport, SC

With the onset of April, Charleston's weather begins to transform into warmer and milder conditions. Notably, the temperature elevates from chilly lows of 41°F (5°C) to a more comfortable range, hitting monthly highs of 66°F (18.9°C). Continuing the trend from March, the daylight hours progressively lengthen. The weather conditions during the day are relatively warm, complemented by ample sunshine. An increase in the UV index denotes a higher exposure to the sun, necessitating the application of sun protection.

Temperature

April in Charleston International Airport sees a rise in the average high-temperature, climbing from a moderate 57.2°F (14°C) in March to an enjoyable 66.2°F (19°C). April nights present a stark temperature decrease to an icy 41°F (5°C).

Rainfall

In Charleston International Airport, in April, it is raining for 14 days, with typically 3.39" (86mm) of accumulated precipitation. In Charleston International Airport, during the entire year, the rain falls for 151 days and collects up to 41.93" (1065mm) of precipitation.

Daylight

In April, the average length of the day in Charleston International Airport is 13h and 1min.
On the first day of April, sunrise is at 7:06 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:01 pm EDT.

Sunshine

In April, the average sunshine is 7h.

UV index

In Charleston International Airport, the average daily maximum UV index in April is 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 in April interprets into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.